JT Sprockets

Online Catalogue

Derbi 659 Mulhacen

2007 to 2008

Front Sprocket

OE Type Rubber Cushioned Front Sprocket

Part Number: JTF308RB

Teeth: 15

Available Sizes: 14, 15

Steel Front Sprocket

Part Number: JTF308

Teeth: 15

Available Sizes: 13, 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR817

Teeth: 46

Available Sizes: 46

Drive Chain

Pitch: 520

Length: 106

Please note that the chain shown in this listing is for size reference only. For the correct chain type and grade, please refer to the vehicle's manufacturer manual.

Gear Ratio Chart

TeethFront Sprocket
13141516
Rear Sprocket463.54
+15.4%
3.29
+7.1%
3.07
standard
2.88
-6.2%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)